Go to PNW4WDA.org, main page, about us, clubs, region 6 and look for Extreme and Umpqua Valley Timber Cruisers. McGrew, the region does a fathers day w/e run on it every year, with a steak dinner with all the trimmings and nice breakfast the next morning. McGrew is about 14 miles of old gold camp wagon road, can run it in around 4 hours, but 5-6 is better for you and the rig. Take a buddy with you, no place to be broke with no help.
Contact either club above for info on that trip or when they go out and play.